CVE-2024-50079 io_uring/sqpoll: ensure task state is TASK_RUNNING when running task_work

In the Linux kernel, the following vulnerability has been resolved: iouring/sqpoll: ensure task state is TASKRUNNING when running taskwork When the sqpoll is exiting and cancels pending work items, it may need to run taskwork. If this happens from within iouringcancelgeneric, then it may be under...

DEBIAN-CVE-2024-50067

In the Linux kernel, the following vulnerability has been resolved: uprobe: avoid out-of-bounds memory access of fetching args Uprobe needs to fetch args into a percpu buffer, and then copy to ring buffer to avoid non-atomic context problem. Sometimes user-space strings, arrays can be very large,...

CVE-2022-48976

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtableoffload: fix using thiscpuadd in preemptible flowoffloadqueuework can be called in workqueue without bh disabled, like the call trace showed in my actct testing, calling NFFLOWTABLESTATINC there would cause a...

CVE-2024-50042

In the Linux kernel, the following vulnerability has been resolved: ice: Fix increasing MSI-X on VF Increasing MSI-X value on a VF leads to invalid memory operations. This is caused by not reallocating some arrays. Reproducer: modprobe ice echo 0 /sys/bus/pci/devices/$PFPCI/sriovdriversautoprobe...

CVE-2022-49033

CVE-2022-49033 affects the Linux kernel’s btrfs qgroup code, where a sleep was performed in an invalid context during qgroup inheritance. The advisory and connected documents describe the fix as: call qgroup_dirty() on the destination qgroup and update the limit item in btrfs_run_qgroups() later,...

CVE-2022-49018 mptcp: fix sleep in atomic at close time

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix sleep in atomic at close time Matt reported a splat at msk close time: BUG: sleeping function called from invalid context at net/mptcp/protocol.c:2877 inatomic: 1, irqsdisabled: 0, nonblock: 0, pid: 155, name:...

CVE-2022-49003 nvme: fix SRCU protection of nvme_ns_head list

In the Linux kernel, the following vulnerability has been resolved: nvme: fix SRCU protection of nvmenshead list Walking the nvmenshead siblings list is protected by the head's srcu in nvmensheadsubmitbio but not nvmempathrevalidatepaths. Removing namespaces from the list also fails to synchroniz...

CVE-2022-48976 netfilter: flowtable_offload: fix using __this_cpu_add in preemptible

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtableoffload: fix using thiscpuadd in preemptible flowoffloadqueuework can be called in workqueue without bh disabled, like the call trace showed in my actct testing, calling NFFLOWTABLESTATINC there would cause a...

CVE-2022-48976

The CVE-2022-48976 case concerns Linux kernel netfilter flowtable_offload. A preemptible path used __this_cpu_add in flow_offload_queue_work(), which could trigger a BUG when called from a workqueue without bh disabled. The fix replaces __this_cpu_add with NF_FLOW_TABLE_STAT_INC_ATOMIC() in flow_...

CVE-2022-48956 ipv6: avoid use-after-free in ip6_fragment()

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid use-after-free in ip6fragment Blamed commit claimed rcureadlock was held by ip6fragment callers. It seems to not be always true, at least for UDP stack. syzbot reported: BUG: KASAN: use-after-free in ip6dstidev...

CVE-2024-50039 net/sched: accept TCA_STAB only for root qdisc

In the Linux kernel, the following vulnerability has been resolved: net/sched: accept TCASTAB only for root qdisc Most qdiscs maintain their backlog using qdiscpktlenskb on the assumption it is invariant between the enqueue and dequeue handlers. Unfortunately syzbot can crash a host rather easily...

CVE-2024-50014

CVE-2024-50014 – Linux kernel ext4 replay path issue Affects: Linux kernel ext4 on systems using fast-commit enabled filesystems (replay path). Affected code path is ext4_fc_replay during journal replay; the replay path attempts to lock sbi->s_bdev_wb_lock before it has been initialized. Root ...

CVE-2024-49953 net/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix crash caused by calling xfrmstatedelete twice The km.state is not checked in driver's delayed work. When xfrmstatecheckexpire is called, the state can be reset to XFRMSTATEEXPIRED, even if it is XFRMSTATEDEAD...

CVE-2024-49883 ext4: aovid use-after-free in ext4_ext_insert_extent()

In the Linux kernel, the following vulnerability has been resolved: ext4: aovid use-after-free in ext4extinsertextent As Ojaswin mentioned in Link, in ext4extinsertextent, if the path is reallocated in ext4extcreatenewleaf, we'll use the stale path and cause UAF. Below is a sample trace with dumm...

CVE-2024-49867 btrfs: wait for fixup workers before stopping cleaner kthread during umount

In the Linux kernel, the following vulnerability has been resolved: btrfs: wait for fixup workers before stopping cleaner kthread during umount During unmount, at closectree, we have the following steps in this order: 1 Park the cleaner kthread - this doesn't destroy the kthread, it basically hal...

CVE-2024-49867 btrfs: wait for fixup workers before stopping cleaner kthread during umount

In the Linux kernel, the following vulnerability has been resolved: btrfs: wait for fixup workers before stopping cleaner kthread during umount During unmount, at closectree, we have the following steps in this order: 1 Park the cleaner kthread - this doesn't destroy the kthread, it basically hal...

CVE-2024-47735 RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled

In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix spinunlockirqrestore called with IRQs enabled Fix missuse of spinlockirq/spinunlockirq when spinlockirqsave/spinlockirqrestore was hold. This was discovered through the lock debugging, and the corresponding log is a...

CVE-2024-47715 wifi: mt76: mt7915: fix oops on non-dbdc mt7986

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix oops on non-dbdc mt7986 mt7915bandconfig sets bandidx = 1 on the main phy for mt7986 with MT7975ONEADIE or MT7976ONEADIE. Commit 0335c034e726 "wifi: mt76: fix race condition related to checking tx queue fi...

CVE-2024-47707 ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid possible NULL deref in rt6uncachedlistflushdev Blamed commit accidentally removed a check for rt-rt6iidev being NULL, as spotted by syzbot: Oops: general protection fault, probably for non-canonical address...

CVE-2024-47707 ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid possible NULL deref in rt6uncachedlistflushdev Blamed commit accidentally removed a check for rt-rt6iidev being NULL, as spotted by syzbot: Oops: general protection fault, probably for non-canonical address...